1870.] 287 [Burgess. 



broad, uniform in width, as long as the basal process of the blade and 

 twice as broad, directed backward, somewhat upward and a little 

 inward, its outer surface turned slightly upward, its apex rounded 

 and curved slightly inward. 



Right clasp : Main body much as in the opposite clasp, but having 

 abroad angle near the middle of the upper margin, beyond which it 

 does not broaden; it is also more deeply excised on the lower margin, 

 Blade as long as that of the left clasp, narrowed at the base and be- 

 yond depressed as there, but just beyond the middle it is bent slightly 

 downward, and having its upper margin slightly angulated, or at least 

 curved a little downward in the outer half; close to the tip the inner 

 edge is angulated again, broadening the tip, which terminates in a 

 rounded right angle ; basal process consisting only of a small, triangu- 

 lar, rounded, backward prolongation at the extreme base of the upper 

 edge of the blade. Lobe extremely broad and large, half as long as 

 the blade, angulated in the middle of its lower margin, its upper half 

 produced as a narrowing rounded plate, curved strongly over upon 

 itself, the concealed margins armed with a few rather prominent 

 spinules. 



New England. 

 Nisoniades Lucilius Lintner mss. Fig. 2. 



Upper organ : Very similar to that of N. Persius, differing in being 

 shorter, having shorter terminal hooks; a larger proportion of the 

 cup, forming the union of the lateral arms, seems to be covered with 

 the inferior armature, as it extends almost to the base of the bent 

 portion of the arms. 



Left clasp : Main body pretty small, slender, straight, slightly con- 

 vex laterally, increasing rapidly and pretty regularly from the base, 

 forming a high triangle, whose apex is at the base of the piece. 

 Blade pretty broad at the base and directed a little downward, de- 

 creasing rapidly in size, and then uniformly slender, very long, 

 curved backward, slightly upward and. considerably and regularly 

 inward, scarcely compressed, its outer surface twisted slightly in the 

 apical half so as to become nearly horizontal and uppermost, very 

 bluntly rounded at the tip, the upper inner angle a little produced ; 

 basal process digitate, attenuated, incurved, bowed upward, not com- 

 pressed, slenderest at the base, rounded at tips, a little more than 

 one third as long as the blade. Lobe forming a slightly longer, broad, 

 nearly equal, flattened plate, a very little narrower and very broadly 



